Head-mounted display device



FIG. 1 is a perspective view of a first embodiment of a head-mounted display device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a perspective view of a second embodiment of the head-mounted display device showing our new design;

FIG. 8 is a front view thereof;

FIG. 9 is a bottom view thereof;

FIG. 10 is left side view thereof; and,

FIG. 11 is a right side view thereof.

The broken lines in the figures show portions of the head-mounted display device that form no part of the claimed design. 

CLAIM We claim the ornamental design for a head-mounted display device, as shown and described. 